How else to explain the planet’s warming trend from 1980 to 2004?

In a study recently published in Geophysical Research Letters, H.B. Hammel of the Space Science Institute in Boulder, Colo., and G.W. Lockwood of Lowell Observatory in Flagstaff, Ariz., found that Neptune’s brightness appears to correlate with temperature changes on Earth. They also noted that Neptune’s temperature warmed from 1980 to 2004…

“If changing brightnesses and temperatures of two different planets are correlated, then some planetary climate changes may be due to variations in the solar system environment,” they write in their abstract.

Mars, another planet that man has yet to visit, is also going through a warming period. According to NASA’s findings, ice caps near its south pole are melting.

“The long-term increase in solar irradiance is heating both Earth and Mars,” is the conclusion of Habibullo Abdussamatov, head of St. Petersburg’s Pulkovo Astronomical Observatory in Russia.

A warming sun warms the planets around it. Whodathunkit?